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How to measure shutters



Measuring for shutters is easy when you follow our helpful step-by-step video guides.

The first thing you need to do is decide whether your shutters will fit to the inside or outside of your window recess.

If you want to fit to the inside of your window recess, first you need to check that your window is suitable. Measure diagonally from corner to corner on each side, and if there is a difference of 12mm or more between these measurements, your window is out of square and we recommend you fit outside the window recess.

If the difference is less than 12mm your shutter frame will fit inside the recess, but you may need to pack the frame when you fit and use decorator’s caulk to fill any gaps.

Once you have determined where your shutters will fit, simply watch the relevant video.

It’s also a good idea to download the relevant measuring pdf instructions, which includes helpful frame templates.

We’re sure you’ll find our instructions easy to follow but if you need any additional advice, call our friendly team on 0845 604 9611.

How to measure for shutters inside the window recess (video audio transcript)

The web-blinds guide to measuring for shutters. You’ve decided to fit your shutter frame to the inside of your window recess. Measuring is straight forward but take time to get it right by watching this video guide.

First make sure the window is clear. Look to see if there are any obstructions in the way, for example is there a picture rail, or is the wall partially tiled? Now is there anything that is going to affect where your shutter should be fitted? Is there a blind already in place that you want to keep? Are there protruding window handles? Or does the window open inwards? A deeper shutter frame, which brings the shutter away from the window may solve some of these issues, or you may need to fit your shutter frame to the outside of the recess. It is important that you are completely happy with where your shutter frame will fit before you start measuring.

Get yourself prepared, you’ll need a metal tape measure, a pencil and paper to write the measurements down and a spirit level. We’ll need your measurements in cm to the nearest mm. Measure the width of the recess from left to right in three places, make a note of the smallest measurement. Measure the drop of the recess from top to bottom in 3 places, make a note of the smallest measurement. These are your basic measurements, but before you order your shutters we need you do a couple of important checks and adjustments to ensure a good fit. First measure the two diagonals, top left to bottom right and top right to bottom left. If there is a difference of 2mm or more between these two measurements your window is too far out of square and we would recommend you fit your shutters to the outside of the window recess. If there is a difference between the two measurements but the different is less than 2mm your shutter frame will fit inside the shutter recess but there may be an uneven gap along one or more sides of the frame. You might need to pack the frame and use decorator’s caulk to fill any gaps.

Next use a spirit level to check the alignment of the recess sides, top and bottom as well as the slope of the sill from the front to back. You are looking for anything that might cause an issue when you eventually fit your shutters. Now slightly adjust your two basic measurements to allow your shutter frame to fit inside the recess, as a general guide a reduction of 3-5mm will create a snug fit, however your window may not be exactly square or the alignment of your recess may be out, or there could be a small obstruction in the way. Make sure the reduction you make is appropriate for your window.

We need a few more measurements depending on the type of shutters you are ordering. For full height shutters you may decide you want your shutter to have a midrail, this will allow you to open the louvres above and below the midrail independently of each other. If your window has a height of 180cm or more your full height shutter must have a midrail. Although the midrail can be positioned anywhere on a shutter we recommend it mirrors the features of your window. Take a measurement from the bottom of your window to the middle of the point you decide upon for your midrail. Please bear in mind that our shutter slat sizes are fixed so the position of the midrail might be slightly higher or lower than the point you measure to. This difference will only ever be half a slat width. For café style shutters take your drop measurement from the bottom of the recess to exactly where you want your shutter to finish. This can be at any point on the window but we recommend it reflects the features of your window. For tier on tier shutters measure from the bottom of the recess to the top of the point you want your bottom panel to finish.

Now you have all the measurements you need to place your order. Once you have done this a member of our shutters technical team will contact you by phone to ensure your measurements are accurate and you have made all the necessary allowances. We’re sure you have taken great care when measuring but we just want to check all the fine details. We’re sure you’ll find measuring your shutters very straight forward but if you need any additional advice please contact our customer services team on 0845 604 9611.

How to measure for shutters outside the recess (video audio transcript)

The web-blinds guide to measuring for shutters. Measuring for shutters is straight forward but take time to get it right by watching this video guide to measuring for shutters fitted outside of your recess.

There are several reasons why you want to fit your shutters to the outside of your recess. You might have a sash window for instance, which doesn’t have a recess, your window may not be square or it might open into the room. Look to see if there is anything in the way that needs moving or adjusting such as a picture rail. Check there is going to be enough room for the shutter to open without hitting obstructions around the window. For example picture or mirrors on the wall, or wall units, cupboards or other pieces of furniture. Get yourself prepared, you’ll need a metal tape measure, a pencil and paper to write the measurements down and a spirit level. We’ll need your measurements in cm to the nearest mm. Your measurements need to include space for the frame, refer carefully to our diagrams of the frames, cut them out and tack them to where you want to fit them, making sure there is enough space all around the window for them to be fitted. Check the position you wish to fit the shutters is square using a spirit level. Now measure across the width from left to right and make a note of the measurement. Next measure the drop from top to bottom and make a note of the measurement. These are the basic measurements you’ll need to order your shutter.

We need a few more measurements depending on the type of shutter you are ordering. For full height shutters you may decide you want your shutter to have a midrail, this will allow you to open the louvres above and below the midrail independently of each other. If your window has a height of 180cm or more your full height shutter must have a midrail. Although the midrail can be positioned anywhere on a shutter we recommend it mirrors the features of your window. Take a measurement from the bottom of your window to the middle of the point you decide upon for your midrail. Please bear in mind that our shutter slat sizes are fixed so the position of the midrail might be slightly higher or lower than the point you measure to. This difference will only ever be half a slat width. For café style shutters take your drop measurement from the bottom of the recess to exactly where you want your shutter to finish. This can be at any point on the window but we recommend it reflects the features of your window. For tier on tier shutters measure from the bottom of the recess to the top of the point you want your bottom panel to finish.

Now you have all the measurements you need to place your order. Once you have done this a member of our shutters technical team will contact you by phone to ensure your measurements are accurate and you have made all the necessary allowances. We’re sure you have taken great care when measuring but we just want to check all the fine details. We’re sure you’ll find measuring your shutters very straight forward but if you need any additional advice please contact our customer services team on 0845 604 9611.